gcc/testsuite/gcc.dg/vect/vect-widen-mult-half.c

   1 /* Disabling epilogues until we find a better way to deal with scans.  */
   2 /* { dg-additional-options "--param vect-epilogues-nomask=0" } */
   3 /* { dg-require-effective-target vect_int } */
   4 /* { dg-additional-options "-mlasx" { target loongarch*-*-*} } */
   5
   6 #include "tree-vect.h"
   7
   8 #define N 32
   9 #define COEF 32470
  10 #define COEF2 324700
  11
  12 unsigned char in[N];
  13 int out[N];
  14 int out2[N];
  15
  16 __attribute__ ((noinline)) void
  17 foo (int a)
  18 {
  19   int i;
  20
  21   for (i = 0; i < N; i++)
  22     {
  23       out[i] = in[i] * COEF;
  24       out2[i] = in[i] + a;
  25     }
  26 }
  27
  28 int main (void)
  29 {
  30   int i;
  31
  32   check_vect ();
  33
  34   for (i = 0; i < N; i++)
  35     {
  36       in[i] = i;
  37       __asm__ volatile ("");
  38     }
  39
  40   foo (COEF2);
  41
  42 #pragma GCC novector
  43   for (i = 0; i < N; i++)
  44     if (out[i] != in[i] * COEF || out2[i] != in[i] + COEF2)
  45       abort ();
  46
  47   return 0;
  48 }
  49
  50 /* { dg-final { scan-tree-dump-times "vectorized 1 loops" 1 "vect" { target vect_widen_mult_hi_to_si } } } */
  51 /* { dg-final { scan-tree-dump-times "vect_recog_widen_mult_pattern: detected" 1 "vect" { target vect_widen_mult_hi_to_si_pattern } } } */
  52 /* { dg-final { scan-tree-dump-times "pattern recognized" 1 "vect" { target vect_widen_mult_hi_to_si_pattern } } } */
  53